Hey guys, I'm once again looking into finding an amplifier better than what I have now that I actually have SOME money. This time I'm trying to get a feel for people's thoughts on the Yorkie XS400 1x15 combo. I liked the XM200 but overall there wasn't any significant increase in volume, and the high end wasn't really as clicky as i could have wanted it. Is the XS400 like a larger version of that with tube?? Also, can I get a really jagged sorta sound with tubes? I've prettymuch been on SS for a long time, and the closest I've got to thunderous low end was the woof of a fifteen from my TKO 65 (peavey). Is the amp durable?? how careful do I have to be about the entire tube preamp inside and moving around the amp? if the fifteen it uses isn't bright enough when I try it out, is there a cab i can hook the head into that will do the job?? A word about my old amp, I like it, but it's not bright enough (i play with pick and like a sorta clicky sound to my thump), but supplies alot of low end power.